A pickup truck's weight depends on the model, make and size of the truck. Normally, a pickup truck would weigh from 1750 lbs to 4550 lbs, but even that is just a guess since the exact numbers vary from one truck to the next. A pickup truck's weight depends on the model, make and size of the truck.
rods and cones. The photoreceptor cells of the retina. They are between the pigment epithelium and the bipolar layer of neurons. The rods contain rhodopsin, which is stimulated by light; the cones contain one of three other photopigments, which are stimulated by various wavelengths of visible light (colors).
The retina has about 6 million cones and 120 million rods. Cones are cone shaped structures and are required for bright light (day light) vision. Rods are rod like structures and are required for dim light (twilight/ night) vision.sually located in the centre of retina. All rod cells are alike, and do not give colour vision. Cones are of three types: blue, green and red, and give colour vision. Sensitive to dim light and give twilight vision.